Trucking friendly navigation software

Hello,

I found this software advertised on the gps website which I bought my TomTom from, it is called "Directions PC Navigator 7 (Great Britain & Ireland)" and I was wondering if any of you had tried it ?
It is for use with a laptop and any plug-in gps device, but it is designed with a TRUCK mode, you can also tell it to completely ignore certain stretches or whole roads.

As some of you use laptops, just wondering if anyone used it, and was it any good?